Xanthosoma striolatum Mart. ex Schott

• Genus: Xanthosoma
• Botanical Background: First described by Carl Friedrich Philipp von Martius and formally published by Heinrich Wilhelm Schott, both key figures in 19th-century aroid taxonomy.

• Geographical Range: Found in Brazil
• Environment: Thrives in warm, humid, and shaded understory habitats with well-draining, nutrient-rich soils. Often associated with forest edges and riparian zones.

Leaves

• Large, arrowhead-shaped (sagittate) leaves with a smooth texture and glossy green surface
• Leaf blades are held on elongated, striated petioles

Inflorescence (Spadix & Spathe)

• Pale, tubular spathe encasing a spadix that contains both male and female flowers.
• Pollinated by beetles, as is common in the genus

Growth Habit

• Terrestrial, tuber-forming plant that develops into a clumping form
• Tall, upright petioles and may reach substantial height in favorable conditions

Light Requirements

• Bright, indirect light
• Can tolerate deeper shade but with slower growth

Watering & Humidity

• Prefers consistently moist soil and high humidity above 60%
• Avoid letting the soil dry out completely

Soil & Potting Mix

• Use a well-aerated mix of compost, peat, and perlite or bark
• Provide both moisture retention and drainage

Temperature & Fertilizer

• Ideal temperatures range from 20–30°C (68–86°F)
• Feed with a balanced liquid fertilizer every 4–6 weeks during the growing season

Division

• Propagated by tuber division
• Separate during dormancy, ensuring each division has at least one growing point

Seeds

• Propagation is infrequent due to limited availability
• Slow germination under controlled tropical conditions

Typical Issues

• Mealybugs, spider mites, and fungal root rot if overwatered
• Poor airflow or excessive humidity may encourage disease

Treatment Recommendations

• Treat infestations with insecticidal soap or neem oil
• Improve soil drainage and ventilation to prevent fungal issues

• Nname “striolatum” refers to the fine grooves
• Stripes seen on the petioles, a subtle but diagnostic feature

• Appreciated for its bold, architectural foliage and ease of cultivation in warm, tropical climates
• Rare in cultivation but valued for its striking appearance

Wild Population Status

• Not assessed by the IUCN
• No immediate threats are currently documented
• Vulnerable to habitat loss

Market Availability

• Rarely available in mainstream horticulture
• Found through specialist growers or botanical institutions